"Loose monetary policy from the U$.$S$.$ central bank has underpinned the stock market's rally, and any sign of a shift toward a more inflation$-$fighting posture could spook the markets."

Note: U$.$S$.$ central bank refers to the Federal Reserve Bank.

If the Fed shifts towards a more inflation$-$fighting posture, it means that

the government would increase spending

the government would decrease taxes

the Fed would decrease money supply

the Fed would increase money supply